  import React from "react";
  import "./index.css"
  export default function Footer(){
    return(
        <div className="todo-footer">
            <label>
                <input type="checkbox"/>
            </label>
            <span>
                <span>已完成0</span>/全部2
            </span>
            <button className="btn btn-danger">清除已完成任务</button>
        </div>
    )
  }